If you're depending solely on savestates with the 3.0 revision (or any other), you're going to be sad to find out that savestates are not a reliable way to save and that the chances of one or more of those saves not loading, freezing the emulator and causing you to lose all of your game progress is a very real possibility. If anything, using the latest Git builds are a better way to go if you must use savestates.